people in los angeles are calling it carmageddon ii. you have to say it like that. last year, drivers feared a similar closure on the interstate would cause a major traffic jam but it went smoothly because most drivers stayed home to avoid it. this week officials are asking people to stay off the road. it will reopen on monday. joy back to our in-depth look on social issues in this year's election are social issues and where each candidate stands on the war on drugs. >> reporter: a fishing trawler tries outrunning a coast guard cutter. >> i can't stop for you can't, i'm sorry. >> reporter: the crew of the cutter fires its 50 caliber machine gun. >> whew! all right! >> reporter: disabling the trawler. on board, 20 tons of marijuana. this was the mid-1980s. the drug war was at its height. then vice president george bush headed up a task force to fight the problem. >> we have to do better interdicting it. >> reporter: found in commercial jets, flour, even boxes of yams, problem is some aren't yams at all, rather plaster casts painted and shaped like yams, inside, pure